#!/user/bin/python
# -*- coding: UTF-8 -*-
# 题目：画图，学用circle画圆形
if __name__ == '__main__':
    from Tkinter import *

    canvas = Canvas(width=800, height=600, bg='yellow')
    canvas.pack(expand=YES, fill=BOTH) # 将Canvas添加到主窗口
    k = 1
    j = 1
    for i in range(0, 26):
        canvas.create_oval(310 - k, 250 - k, 310 + k, 250 + k, width=1)
        k += j
        j += 0.3

    # canvas.create_oval(0, 0, 100, 100, width=1)
    # canvas.create_oval(310 - 100, 250 - 100, 310 + 100, 250 + 100, width=5)
    # canvas.create_oval(310 - 10, 250 - 10, 310 + 10, 250 + 10, width=1)


    mainloop()